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26 May, 00:10

The interior angles of a triangle have measures 100°, (4y+25) °, and (3y+20) °. What is the value of y?

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  1. 26 May, 00:22
    0
    Since the sum of all angles of a triangle is 180°

    So 100°+4y+25°+3y+20=180°

    145°+7y=180°

    7y=180°-145°

    7y=35°

    y=5°
  2. 26 May, 00:34
    0
    The sum of triangle is 180 degrees and therefore here's what I would do, it should be 5 degrees.
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